Die for making spoke-nipples



L'HLGRAHAM AND M. S. FOLEY. ME FOR MAKING SPOKE NIPPLES. APPHCATIONHLED OCT. 20, 1917- '1,395,181. Patented 0m 25,1921.

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1J1 HIH HIIII UNITED STATES PATENT OFFICE.

JAMES H. GRAHAM AND MAHLON S. FOLEY, OF TORRINGTON, CONNECTICUT,

ASSIGNORS TO THE TORRINGTON COMPANY,'OF TORRINGT N, CONNECT- ICUT, A CORPORATION OF CONNECTICUT.

DIE FOR MAKING SPOKE-NIPPLES.

Specification of Letters Patent.

Patented Oct. 25, 1921.

To all whom it may concern Be it known that we, JAMES H. GRAHAM and MAI-ILON S. FOLEY, citizens ofthe United States, residing at Torrington, in the county of Litchfield, State of Connecticut, have invented certain new and useful Improvements in Dies for Making Spoke-Nipples, of which the following is a description, reference being had to the accompanying drawing, and to the figures of reference marked thereon.

The invention relates to improvements in dies for making spoke nipples.

The object of the invention is to provide a die and plunger in which a round straight bar or slug of a determined length can be formed into a nipple having a kerfed head, a round portion and a rectangular outer portion, by endwise movement of a plunger against one end forcing it into the die.

Another object; of the invention is to provide a cheap and effective die which, by a single or a continuous operation, will form a strong and durable nipple and having certain combination of parts and details of construction and operation hereinafter more fully set forth.

In the accompanying drawings,

Figure 1 is a vertical longitudinal sectional view of one form of die, in which a nipple of the character shown in our application filed October 3, 1917, Serial Number 194,539 is formed;

Fig. 2 is an end view of Fig. 1 with a portion of the die removed;

Fig. 3 is a vertical longitudinal sectional view of a further modified form of die;

Fig. 4 is an end view of Fig. 3 with a portion of the die removed;

Fig. 5 is a side elevation of a blank or slug from which a nipple is formed in our improved die, and

Fig. 6 is a side elevation of the complete nipple .made in our improved die.

Referring now to the drawings, the dies are in the form of a composite steel block, having a bore therethrough, and said block is adapted to be held in any desired manner in the die assembly as well known in the art. After the die has been assembled, the blank such as shown in .Fig. 5, is inserted in the die, one end resting against the usual stop which may be inserted through a bore 13 of F gs. 1 and 3 so that one end of the blank will rest firmly thereagainst. A heading die is then brought against the projecting end of the blank 11 to cause the metal of the blank to flow and form a nipple corresponding to the inner contour of the die. If desired, this heading die may be provided with the usual depressions on each side of a solid web, to form a kerf, all of which is well known in the prior art.

Inasmuch as the present invention resides partlcularly in the form of the composite d1e, with the registering bores of specific inner contour, only a description of this die Wlll be glven. The steel block is preferably made of three pieces, including a main body portion 12 having a small round bore 13 through a portion of it, and an enlarged round recess 14 surrounding the bore at one end. A second portion or back 15 fits with- 1n the recess and is provided with a rectangular bore 15 therethrough, the ends of which are beveled as indicated at 16. Rest ing against the body portion is a third part 17 of the same diameter, having a round bore 18 therethrough, which has its outer end slightly enlarged and beveled as indicated at 19 to form a head, as heretofore described. The several parts are placed in the die assembly and held in the position shown in Fig. 1.

In Fig. 3, instead of having a back made of a single piece as shown in Fig. 1, it is made of two pieces 20 and 21 as clearly shown in Fig. 4. In both instances, the operation of the plunger is exactly as that described above.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is

1. A die of the character described comprising a body portion having a bore and an enlarged recess, a back in said recess having a registering bore formed with fiat walls terminating in beveled ends, and a member resting against the body portion and having a round bore registering with the angular bore and having a beveled outer end, all of the parts held in their correlated position by a die assembly.

2. A die of the character described comend all of the parts held in their correlated 10 prising a body portion having a bore and an position by a dieassembly. enlarged recess surrounding the bore, a back In testimony whereof we afliX our signain said recess formed of two parts and havtures in the presence of two witnesses.

ing angular recesses forming an angular V p r I JAMES GRAHAM. bore vwith beveled ends and a member restr 7 L IAHLON S; FOLEY. ing against the body portion over the back Witnesses: a 1 i p and having a round bore registering with CHAS. W. DAVIS,

the angular bore and having a beveled outer V W. G. CINEN. 

